The rule is simple: When moving from one chord tone to another, approach the target from a half-step below. A PDF of his improvisation work will show you 20 variations of this single concept, applied to the "Donna Lee" changes or a static funk vamp.

This rhythmic focus explains why Henderson's playing sounds "funky" even over complex changes like 7sus4(b9) chords. The PDF materials argue that note choice is secondary to groove fidelity.

The primary "PDF work" associated with Scott Henderson’s improvisation methods is found in the that accompany his instructional videos. These materials are often included with the Jazz Rock Mastery DVD , which combines his two landmark REH videos: "Jazz Fusion Improvisation" and "Melodic Phrasing".